SAIC is on the corner of 23rd St and Crystal Drive. If you take metro, you can get here in two ways:

1. (recommended unless it is pouring rain) Go all the way outside. Take 18th street east into Crystal City (do not go under the bridge) and turn right on Crystal Drive. At the T intersection of 23rd & Crystal Drive is Jaleo, we are on eth opposite side of 23rd, but the same side as Crystal Drive as that. Follow the building along Crystal Drive until you get to the entrance. As you would suspect, Suite 810 is on the 8th floor.
2. Follow the underground south. You will pass an optomologist's office and several ships. You will exit to the outside at 23rd. If it's still open, you can go into the Century building complex by Navy Federal Credit Union. At the Copy Center take a left into the hallway that will take you to the elevator lobby of our building. If this "mall" isn't open, just turn left and follow 23rd to Crystal Drive and take the directions as above.

There's a number of underground garages (including in our building). Also, at 7PM there may be on-street parking available, but I would not expect to find an open spot. Short term garage parking isn't outrageous, but you're probably looking at $4-$5 for two hours.

Here's a map from google; http://maps.google.com/maps?q=2450+crystal+drive,+arlington,+va&t=h&hl=en